yes, it is worth it. it's a practical approach to dealing with knife attacks.

"Face punches are an essential character building part of a martial art. You don't truly love your children unless you allow them to get punched in the face." - chi-conspiricy
"When I was a little boy, I had a sailor suit, but it didn't mean I was in the Navy." - Mtripp on the subject of a 5 year old karate black belt
"Without actual qualifications to be a Zen teacher, your instructor is just another roundeye raping Asian culture for a buck." - Errant108
"Seriously, who gives a **** what you or Errant think? You're Asian males, everyone just ignores you, unless you're in a krotty movie." - new2bjj

It's 'post failure' as in 'you probably already got stabbed and/or you let the guy get close to you without running away like you should' knife defence. Basically it revolves around getting an outside 2-on-1 clinch and headbutting/kneeing the guy as needed.

So it goes over how to select a good running show, talks about pronate and supinate, and gives the number for your local law enforcement and emergency room?

For exactly this reason, he specifically only deals with the case where the guy is already on top of you, probably already stabbing, his advice on the typical MA knife defence scenario where there's a guy standing 6 feet away with a drawn blade is "Run away".

Yes, STAB is one of the better and more realistic knife defence approaches around but if youíre looking for some special techniques to counter knife attacks you WILL be disappointed. Itís a realistic approach to dealing with knife attacks and starts with the premise that you have failed to anticipate the attack and run away and have been/are being stabbed.

For exactly this reason, he specifically only deals with the case where the guy is already on top of you, probably already stabbing, his advice on the typical MA knife defence scenario where there's a guy standing 6 feet away with a drawn blade is "Run away".

... which is perhaps the most sensible, intelligent and effective knife-attack defense IMO.

The street argument is retarded. BJJ is so much overkill for the street that its ridiculous. Unless you're the idiot that picks a fight with the high school wrestling team, barring knife or gun play, the opponent shouldn't make it past double leg + ground and pound - Osiris